/Engine/Source/Runtime/Engine/Classes/Animation/CustomAttributesRuntime.h
Add any new or override existing custom attributes
static void OverrideAttributes ( const [UE::Anim::FStackAttributeContainer](API\Runtime\Engine\Animation\FStackAttributeContainer) & SourceAttributes, [UE::Anim::FStackAttributeContainer](API\Runtime\Engine\Animation\FStackAttributeContainer) & OutAttributes, float Weight )